From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261316AbVG0TQw (ORCPT ); Wed, 27 Jul 2005 15:16:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262123AbVG0TJp (ORCPT ); Wed, 27 Jul 2005 15:09:45 -0400 Received: from emailhub.stusta.mhn.de ([141.84.69.5]:63240 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S261344AbVG0TIw (ORCPT ); Wed, 27 Jul 2005 15:08:52 -0400 Date: Wed, 27 Jul 2005 21:08:41 +0200 From: Adrian Bunk To: Vinicius Cc: bernd@firmix.at, linux-kernel@vger.kernel.org Subject: Re: Re: Kernel doesn't free Cached Memory Message-ID: <20050727190841.GL3160@stusta.de> References: <20050722_120205_006490.jdob@ig.com.br> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050722_120205_006490.jdob@ig.com.br> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 22, 2005 at 09:02:05AM -0300, Vinicius wrote: Content-Description: Mail message body > On Fri, 2005-07-22 at 08:27 -0300, Vinicius wrote: > [...] > >> I have a server with 2 Pentium 4 HT processors and 32 GB of >>RAM, > this > >> server runs lots of applications that consume lots of memory to. >>When I > >>stop > >> this applications, the kernel doesn't free memory (the memory >>still in > >>use) > >> and the server cache lots of memory (~27GB). When I start this > >>applications, > >> the kernel sends "Out of Memory" messages and kill some random > >> applications. > >> > >> Anyone know how can I reduce the kernel cached memory on RHEL >>3 > (kernel > >> 2.4.21-32.ELsmp - Trial version)? There is a way to reduce the >>kernel > >>cached > >> memory utilization? > > >Probably RedHat's support can answer this for RHEL 3. > > > > Bernd > > Bernd, > > The server runs RHEL Trial Version, without support... for tests purpose. >... The answers you already got are: - for that much memory, 64bit processors are really recommended - 2.6 kernels are a better choice for this scenario - linux-kernel doesn't support vendor kernels, does the same problem occur with kernel 2.6.12 ? Another thing that surprises me is that why you are testing an old version of RHEL. If you want to build a new system, you should better test RHEL 4. > Vinicius. > Protolink Consultoria. cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed